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Editorial Team
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Asked: 2026-06-06T13:57:43+00:00

Given the following code: string source = Some Unicode String; foreach( char value in

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Given the following code:

string source = "Some Unicode String";
foreach( char value in source ) {

    int y = (int)value;

}

Is it possible that the cast from char to int could fail (and under what circumstances)?

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1 Answer

  1. Editorial Team

    A conversion from char to int will not fail, with any char value.

    From .NET 4.0 reference

    The .NET Framework uses the Char structure to represent a Unicode
    character. The Unicode Standard identifies each Unicode character with
    a unique 21-bit scalar number called a code point, and defines the
    UTF-16 encoding form that specifies how a code point is encoded into a
    sequence of one or more 16-bit values. Each 16-bit value ranges from
    hexadecimal 0x0000 through 0xFFFF and is stored in a Char structure.
    The value of a Char object is its 16-bit numeric (ordinal) value.

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